Improvement in evaporating salt water



@time @Mira WILLIAM JAMES DODGE, OE svEAOUsE, NEW YORK.

v Letters Patent No. 95,668, (lated October l12, 1869.

IMPRovEMENT 1N- EVAPORATING SALT WATER, ac.

The Schedule referred to in'these Letters PatentV and making part o'f the same.

To all lwhom it may concern:

Be it known that I, WILLIAM J .mes DODGE, of Syracuse, in the county of Onondaga, and State of New York, have invented a new and improved Method of Evaporating Salt iVater, Src.; and I do hereby de'- clare that the following is a full, clear, and exact description thereof, which will enable those skilled in the art to make and use the same, reference being had to the accompanying drawing, forming part of this speciiication, iu which-.

Figure 1 is a cross-section of 'au ordinary arch for boiling salt, and

Figure 2 is a longitudinal section of the same with my improvement.

Similar letters of reference indicate like parts.

My invention consists in evaporating salt water or other liquids by forcing a current of aix-.through the same, and is` used as au auxiliary to boiling, or tosolar evaporation, as hereinafter more fully explained.

In the accompanying drawing- A is au ordinary kettle;

B is the mason-work of the arch andv C is the fire-space. y

Along the sides of the arch in the fire-chamber or space, I arrange 'one or more air-pipes, D, as seen in fig. 2, one end of the pipe terminating in the kettle A with a rose-head. l

While the liquid in the kettle is being boiled, a current of air isdriven through the pipe D, and, in passing through the tire-chamber, -becomes highly heated, and its absorbent power greatly'increased. It is then discharged into and rises through the liquid in the kettle, and, becoming fully saturated or loaded with vapor it is discharged into the atmosphere.

The side walls of the arch maybe-runde hollow, and a chamber formed, for heating the air On its-way from the blower to the kettle, and much ot' the pipe D thereby dispensed with.

The discharge-end of the pipe can also have a swircljoint, at e, fig. l, so that the rose-head l can be turned 1 up out of the way readily, when desired to remove the salt or peck out the scale, &c.

' his auxiliary process can be applied to solar vats,

but is chieiiy designed to be used in connection with the boiling-process.

By these means, the economy of manufacture is largely increased, with a light additional cost of apparatus. y

A current of cold air, or at the temperature of the atmosphere, can be used in connection orauxiliary to solar evaporation; but hot air is,- in all cases, preferable, where the saine can be applied.

I do not wish to confine myself 'to the particular construction of apparatus shown, as any of the known and suitabledevices for heating the air and securing its rapid and thorough circulation through lthelfluid c an be used; but

What I claim, and desire to secure by Letters Patent, is-

Th'e use of' currents of air, forced into and. discharged through the liquid to be evaporated, in connection with or as auxiliary to 'the ordinary boiling or solar-evaporation methods, substantially as described.

WM. JAMES DODGE.

Witnesses:

lt. HmsH,

JOsEPi-r Prout. 

